An Examiner Is Using an Ophthalmoscope to Examine a Patient's

question 13

Multiple Choice

An examiner is using an ophthalmoscope to examine a patient's eyes.The patient has astigmatism and is nearsighted.The use of which of these techniques would indicate that the examination is being performed correctly?

• A) Using the large full circle of light when assessing pupils that are not dilated
• B) Rotating the lens selector dial to the black numbers to compensate for astigmatism
• C) Using the grid on the lens aperture dial to visualize the external structures of the eye
• D) Rotating the lens selector dial to bring the object into focus

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Definitions:

Vasoconstriction

The narrowing of blood vessels, which increases blood pressure by reducing the volume or space inside the vessels.

Respiratory Centers

Brain regions that regulate the rate and depth of breathing, located primarily in the medulla oblongata and pons.

Central Nervous System

Consists of the brain and spinal cord, responsible for processing information and controlling the body's actions and reactions.

Brainstem

The lower extension of the brain where it connects to the spinal cord, responsible for regulating vital functions such as heart rate and breathing.